On Feb 4, 2009, at 6:56 PM, Scott Howard wrote:
On Mon, Feb 2, 2009 at 9:35 PM, Patrick W. Gilmore
<patr...@ianai.net>wrote:
Except the RIRs won't give you another /48 when you have only used
one
trillion IP addresses.
Of course they will! A /48 is only the equivalent of 65536
"networks" (each
network being a /64). Presuming that ISPs allocate /64 networks to
each
connected subscriber, then a /48 is only 65k subscribers, or say
around a
maximum of 200k IP addresses in use at any one time (presuming no
NAT and an
average of 3-4 IP-based devices per subscriber)
IPv4-style utilization ratios do make some sense under IPv6, but not
at the
address level - only at the network level.
First, it was (mostly) a joke.
Second, where did you get 4 users per /64? Are you planning to hand
each cable modem a /64?
--
TTFN,
patrick
